Abstinence from sexual intercourse for at least three days prior to a medication abortion. A medication abortion is the termination of an intrauterine pregnancy within 49 days of menopause by medication. It is best to avoid intercourse before a medication abortion, because a medication abortion is usually accompanied by a certain amount of blood when the pregnancy sac is expelled, and if there is bleeding in the vagina at that time, it can easily cause infection. In addition, pregnant women usually have a weak immune system and need to be checked for vaginitis before a medical abortion, which can cause vaginitis or abnormal vaginal discharge in women who have had sex. In addition, since a medical abortion usually takes 2-3 days for the pregnancy sac to be expelled, it is more likely that the procedure will be successful if the woman can maintain pubic hygiene and pay attention to diet and rest during this period. In addition, women should be aware that there are certain contraindications before having a medical abortion, such as pregnancy in the uterine horn or cervix, age over 40 years, severe menstrual irregularities, heart disease, hepatitis, etc., and pregnancy with a ring, so women who choose to have a medical abortion should pay attention.